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package storymotion.photo;

import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import storymotion.config.Configuration;
import storymotion.keyword.KeywordDAO;

/**
 *
 * @author leoomoreira
 */
public class PhotoUploadDelete extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

        String photoIdStr = request.getParameter("photoId");
        if (photoIdStr != null && photoIdStr.trim().length() > 0) {
            long photoId = Long.parseLong(photoIdStr);
            KeywordDAO keywordDAO = null;
            PhotoDAO photoDAO = null;
            try {
                photoDAO = new PhotoDAO();
                Photo photo = photoDAO.getById(photoId);
                File file = new File(Configuration.PHOTOPATH + photo.getId() + "_" + photo.getName());
                if (file.exists()) {
                    file.delete();
                }
                keywordDAO = new KeywordDAO();
                keywordDAO.deleteByPhotoId(photoId);
                keywordDAO.commit();
                photoDAO.delete(photoId);
                photoDAO.commit();
                request.setAttribute("message", "Photo successfully deleted");
            } catch (SQLException ex) {
                request.setAttribute("message", "Unable to delete this photo");
                if (keywordDAO != null) {
                    try {
                        keywordDAO.rollback();
                    } catch (SQLException ex1) {
                    }
                }
                if (photoDAO != null) {
                    try {
                        photoDAO.rollback();
                    } catch (SQLException ex1) {
                    }
                }
            }
        } else {
            request.setAttribute("message", "Unable to delete this photo");
        }
        request.getRequestDispatcher("MainServlet").forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
